Update code to Swift 3

-Fix issue that badges are not properly display/disappear on button when working with Xcode 8.0

-Badge now can stick to 4 different position on button here i call it anchor, these position are TopLeft, TopRight, BottomLeft, BottomRight and Center.
Those anchors have offset values e.g when anchor set to TopLeft have 2 valid offset values, left and top respectively. You can either use offset value to do minor position adjustment or leave it zero which will no effect.

"badgeEdgeInsets" property is still taking into count when calculating X Y for badge, therefore, this become 4 different options when working with badge.
	1.Leave both "badgeEdgeInsets" or anchor offset to zero, this lead to badge's center been placed at 4 different position on button
	2.Change "badgeEdgeInsets" to do minor adjustment
	3.Change anchor offset to do minor adjustment
	4.Combine "badgeEdgeInsets" with anchor offset

-Class become designable and some properties are inspectable which mean badge's properties can be adjust in Interface Builder and visual of badge will automatically update base on those properties

…et-available-in-objective-c

Make `badgeEdgeInsets` property available in Objective C

…geButton-Swift into NPContribution-BadgeAnchor

# Conflicts:
#	Classes/MIBadgeButton.swift
#	MIBadgeButton/Base.lproj/Main.storyboard

*Total -- 360.36kb -> 250.00kb (30.63%)

/MIBadgeButton/Images.xcassets/LaunchImage.launchimage/iOS Simulator Screen Shot Aug 10, 2015, 6.27.14 PM.png -- 15.00kb -> 0.59kb (96.04%)
/screenshot.png -- 65.62kb -> 29.15kb (55.57%)
/MIBadgeButton/Images.xcassets/1.imageset/1.png -- 136.42kb -> 82.07kb (39.84%)
/MIBadgeButton/Images.xcassets/facebook.imageset/1408848343_facebook_circle_color.png -- 3.18kb -> 2.26kb (28.8%)
/MIBadgeButton/Images.xcassets/twitter.imageset/1408848408_twitter_circle.png -- 4.79kb -> 3.54kb (26.05%)
/MIBadgeButton/Images.xcassets/OS-X-Yosemite-for-iOS.imageset/OS-X-Yosemite-for-iOS.jpg -- 115.65kb -> 112.78kb (2.49%)
/MIBadgeButton/Images.xcassets/pinterest.imageset/1408848335_pinterest-icon-circle-red.png -- 1.94kb -> 1.91kb (1.76%)
/MIBadgeButton/Images.xcassets/swift-logo-hero-2.imageset/swift-logo-hero-2.jpg -- 17.75kb -> 17.69kb (0.34%)

Signed-off-by: ImgBotApp <ImgBotHelp@gmail.com>